content: remove "Until now ..."

It's been a while since Firecracker was open sourced; the "Until now
... " phrase isn't needed anymore.

Author: raduweiss

index.html

@@ -71,9 +71,7 @@
         </header>
         <section>
           <p>
-            Until now, you needed to choose between containers with fast startup times and high density, or VMs with
-            strong hardware-virtualization-based security and workload isolation. With Firecracker, you no longer have
-            to choose. Firecracker enables you to deploy workloads in lightweight virtual machines, called microVMs,
+            Firecracker enables you to deploy workloads in lightweight virtual machines, called microVMs,
             which provide enhanced security and workload isolation over traditional VMs, while enabling the speed and
             resource efficiency of containers. Firecracker was developed at Amazon Web Services to improve the customer
             experience of services like